Gas-grate.



E. G. VAN ZANDT.

GAS GRATE.

/ APPLICATION FILED JULY 11, 1910. 1,045,466, Patented Nov. 26, 1912. 9 @2 2 9 COLUMBIA PLANOGRAPH C0 WASHINGTON. D4 c.

u inn s'r'rns EDWIN G. VANZANIDT, OF ST. LOUIS, MISSOURI, ASSIGNOR T0 VAN ZANDT GAS APPLIANCE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

GAS-GRATE.

Specification of Letters Patent.

Application filed Ju1y 11,1910. Serial No. 571,348.

To all whom it may concern:

1 Be it known that I, EDWIN Gr. VAN ZANDT, a citizen of the United States of America, residing in the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in Gas-Grates, of which the following is a specification.

This invention relates to gas grates and more particularly to grates embodying the inventionsset forth in the U. S. Letters Patent No. 838,596 dated Dec. 18, 1906, and U. S. Letters Patent No. 876,507 dated Jan. 14., 1908.

The object of this invention is to provide a novel arrangement of means for retarding the flow of unburnt combustible gases of the flame and subjecting them to a treatment so as to be able to burn them almost entirely.

For this purpose the invention consists of receiving members arranged transversely in front of and above the outlet openings for the passage of the initial flame at the exterior of which members the second gas may be burnt.

The invention consists more particularly of a supply vessel having a plurality of openings and receiving members arranged above and in front of said openings for retarding the flow of the unburnt gases of the initial burner and burning them at the out side of said members.

The invention consists further in providing the receiving members with deflecting projections and with openings.

In the accompanying drawings, Figure 1 shows a front-view of my improved device, Fig. 2, a vertical transverse section taken on line 2-2 Fig. 1, Fig. 3 shows a detail view taken on the same line and on a larger scale, Figs. 4 to '7show vertical sections of modifications of' my invention. arranged substantially like that shown in front view in Fig. 1.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, the supply vessel 13 communicates by means of openings 13 with the supply pipe 14 having a mixing regulator 15. The supply vessel is provided at its front part 11 with openings 12 for the passage of the gas contained in the vessel, which gas as it emanates through the open ings 12 is ignited and has these initial flames projecting forwardly of the structure. All this is well known.

In the gas-burning grates heretofore next above.

known considerable unburnt portions of gas pass into the atmosphere and cause disagreeable elfects to persons breathing the same on account of the poisonous constituents of such unburnt gases. In order to fully burn such gases and to add to the efliciency of j the grate and receive thereby 'a higher heat ing effect, receiving members 18 are provlded, as shown 111 F lgs. 2 and 3, and which in that form are of an inverted U-shape in cross section, part of which is secured to the front part of the supply vessel 13 and the other part of which projects downwardly in front of and lower than the openings 12. The frame 10 surrounds the front part 11 and serves also to close the ends of the inverted troughs 20 formed by the receiving members 18. The initial flames emanating from the openings 12 are therefore met by the downwardly projecting part of the members 18 and by reason of this, the unburnt parts of the flames are collected in the upper part of each member 18 and held therein at 20 for considerable time. Said unburnt parts will be held here until they overflow at the front-part of each member 18 when they are ignited and form secondary flames at the lower edge of the downwardly projecting part of the member 18. Any gas escaping unignited is caught by the member The secondary flames ignite automatically and thus by applying a match to one opening 12, all the emanating gas may be ignited. In Fig. 2 a plurality of the receiving members 18 is shown and in the practical operation of the device they cover up the flame emanating through the open ings 12 and present a very peculiar and in teresting sight in that the front-part of the grate is almost entirely covered with a pcculiar silverin blueish flame characteristic of'the re-burmng of the products of combustion such as is incidental to my inventions. By this arrangement almost the entire constituents of the burning gas are ignited and burnt and the heating eflect thereby increased, while the dissemination of poisonous gases is entirely done away with. Referring to the various embodiments shown in Figs. 47, in Fig. 4 is shown a receiving member such as is shown in Figs. 2 and 3, but has its containing portion 22, which is flat, as shown at 19 in Fig. 3, circular, as shown at 21 in Fig. 4. In Fig. 5 a receiving member 24 is shown which has a forwardly projecting flange 25 at the edge of which the flame burns. These receiving members are also provided in their upper part with openings 26 through which a part of the re tained gas passes. To prevent, however, the too ready flow of gas through these openings 26 a deflecting flange 2.7 is provided above the openings 12 and below the openings 26. By this arrangement the flow of combustible gases through the openings 26 is held in balance with the flow outwardly of the flanges 25. The structure shown in Fig. 6 is similar to the structure shown in Fig. 5, but the flange 27 is of a different proportion in order to keep the balance which is somewhat affected by the inwardly projecting flanges 28 at the lower part of the receiving members 24. In the structure shown in Fig. 7, which is much like that shown in Fig. 4, the receiving members are provided with openings 29 at their upper portion which openings are V-shaped and outwardly flaring.

By my improved invention I provide a grate which is very pleasant to see and which by reason of its consumptionof all poisonous gases is not only very eflicient, but also very desirable to use, while it is simple and, inexpensivein its manufacture.

My invention therefore consists of a grate comprising a supply vessel having openings and receiving members in front of said openings. And also in the receiving members, some forms being rectangular, others circular in cross-section, others haveopenings, others openings and flanges to retard the flow of the gases.

I do not limit myself to the details herein described necessary for a proper description of the invention, but reserve the right to make various changes within the scope of the appended claims without departing-from the spirit of the invention.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A gas grate comprising a supply vessel havlng openings at which gas 15 burned and receiving members in the front of said openings, for collecting the products of combustion; said receiving members preventing immediate egress of unburned gases in unignited state and having their lower edges free to the atmosphere, whereby the prod acts of combustion are forced past and are burned at said edges.

2. A gas grate comprising a supply vessel having a plurallty of openings at one side thereof at which gas is burned, a plurality of receiving members, said receiving members being provided with downwardly-projecting members extending in front of the openings of the supply vessel and below the same, for holding the products of combustion; said receiving members preventing immediate egress of unburned products of combustion in unignited state, andhav ing their lower edges free to the atmosphere, whereby the products of' combustion are burned at said edges.

3. A grate comprising a supply vessel having a plurality of openings and a plurality of receiving members having flanges extending in front of the openings and below the same, said receiving members having openings at the top thereof and having their lower edges free to the atmosphere for burning the products of combustion at said edges.

l. A grate comprising a supply vessel hav ing a plurality of openings, a plurallty of flanges extending outwardly from the supply vessel above said openings, and a plurality of receiving members having openings at the top thereof adjacent the flanges of the supply vessel, said receiving members having their lower edges-free to the atmosphere for burning the products'of combustion at said edges.

5. A grate comprisingasupply vessel having a plurality of openings, and a plurality of receiving members in front of said open-- ings, each member having an outwardlyprojecting flange and having its lower edge free to the atmosphere for burning the products of combustion at said edge.

6. A grate comprising a-supply vessel having a plurality of openings, and a plurality of receiving members in front of said openings, each member havingan outwardly and inwardly projecting flange and having its lower edge free to the atmosphere for burning the products of combustion at said edge.

7. A grate comprising a supply vessel having a flat front face provided with a plurality of horizontal series of outlet openings, and a horizontally disposed receiving member secured to said front face above each series of openings and projecting forwardly and'then downwardly in front of said openings, said receiving members having their lower edges free to the atmosphere for burning the products of combustion at said edges.

8. A grate comprisinga supply vessel havin a flat front face provided witha plu rality of horizontal series of outlet openings, and a horizontally disposed receiving member secured to said front face above each series of openings and pro ecting forwardly and then downwardly in front of said openings, each of said rece1v1ngmembers being continuous, extending from side to side of said face and covering all of the holes of the series and each receivingmemher having its edge free tothe atmosphere for burning.theproducts of combustion at.

said edge.

9. A grate comprising a supply vessel having a flat front faceprovided wit-ha plurs'o rality of horizontal series of outlet openings, a plurality of horizontally disposed receiving members, one for each of said series of openings, extending continuously from side to side of said front face, each receiving member being secured to said face above the corresponding series of openings and projecting forwardly from said face and then downwardly in front of the openings, the lower edge of each receiving member being provided with a forwardly and a rearwardly projecting flange free to the atmosphere for burning the products of combustion at said flange the upper part of the member being provided with openings, and an additional flange on said front face between the series of openings and the lastnamed openings.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing Witnesses.

EDXVIN G. VAN ZANDT.

. Witnesses LoUIs BLUM, LENA WIDRIG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

